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Ammonium Acetate CAS 631-61-8 98% White Crystalline Powder HPLC Buffer Grade pH Regulator Reagent
| MOQ: | 500g-25kg for sample order, 1000kg for commercial order |
| Standard Packaging: | 25kg kraft paper bags with PE liner, 500kg jumbo bags, custom packing available |
| Delivery Period: | 3 working days for stock, 15-20 days for production |
| Payment Method: | T/T,L/C,OA |
| Supply Capacity: | 500 Tons / Month |
HPLC buffer grade ammonium acetate
,98% white crystalline powder
,pH regulator reagent CAS 631-61-8
Ammonium Acetate CAS 631-61-8
Product Introduction
Ammonium acetate (CH3COONH4, CAS 631-61-8) is a white, hygroscopic crystalline salt produced by the neutralization of high-purity acetic acid with ammonia. It is one of the most widely used buffering salts in analytical chemistry and HPLC because its aqueous solutions maintain a stable pH near 7 and are fully volatile under freeze-drying. Zorui supplies ammonium acetate in 98% min assay with low heavy-metal content, available in laboratory, pharmaceutical and food-processing grades.
Physical and Chemical Specifications
| Property | Specification |
| Common Name | Ammonium Acetate |
| CAS Number | 631-61-8 |
| Molecular Formula | C2H7NO2 (CH3COONH4) |
| Molecular Weight | 77.08 |
| Assay | 98.0% min |
| Appearance | White crystalline powder |
| Melting Point | 114 °C |
| Density | 1.07 g/cm3 (approx.) |
| pH (0.5M aqueous solution) | 6.5 - 7.5 |
| Solubility | Very soluble in water; soluble in ethanol |
| Heavy Metals | 10 ppm max |
| Residue on Ignition | 0.01% max |
Product Functions
- Buffer Salt: forms a volatile buffer system around pH 7 used in HPLC mobile phases and biochemical assays.
- Precipitation Reagent: precipitates nucleic acids and proteins in molecular biology workflows.
- pH Regulator: adjusts and stabilizes acidity in pharmaceutical and food processing solutions.
- Chemical Intermediate: supplies acetate and ammonia groups for organic syntheses.
Application Areas
- Laboratory & Analytical: HPLC/LC-MS buffers, chromatography, titration and reagent preparation.
- Pharmaceutical: pH adjustment, crystallization media and excipient processing.
- Biotechnology: DNA/RNA precipitation and protein purification.
- Food Processing: acidity regulator and buffer (food grade lots, GRAS applications).
- Textile & Leather: dyeing auxiliary and pH control baths.
Manufacturing Process
- Reaction: high-purity acetic acid is neutralized with gaseous ammonia or ammonium hydroxide under controlled temperature.
- Crystallization: the concentrated solution is cooled to form white crystals.
- Separation: crystals are centrifuged and washed to remove residual mother liquor.
- Drying & Screening: product is dried, milled and sieved to a uniform particle size.
- Quality Control: assay, pH, chloride, sulfate and heavy-metal tests are run on every batch with COA issued.
Why Choose Us
- Zorui brand with ISO 9001 quality system; every batch is shipped with COA, MSDS and TDS.
- Consistent 98% min assay and low impurity profile for reproducible analytical results.
- Flexible packing from 500g sample bags to 25kg bags and 500kg jumbo bags.
- Fast delivery: stock orders ship within 3 working days.
- Professional export documentation and technical support for first-time buyers.
Interested in this product? Contact our team for a competitive quote, free sample or technical consultation. Request a Quote / Request Free Sample.
FAQ
Q: What is ammonium acetate mainly used for?
A: It is chiefly used as a buffer salt for HPLC and analytical chemistry, a precipitating agent for nucleic acids, a pH regulator, and a chemical intermediate.
Q: Do you supply food grade ammonium acetate?
A: Yes, food-processing grade lots are available with dedicated COA. Please confirm your destination-market regulations before ordering.
Q: Is a free sample available?
A: Yes, 500g samples are available for quality evaluation; you only bear the express cost.
Q: What is the packaging and shelf life?
A: Standard packing is 25kg kraft paper bags with PE liner or 500kg jumbo bags. Shelf life is 24 months when stored sealed in a cool, dry place.
Q: How should ammonium acetate be stored?
A: Keep the container tightly closed in a cool, dry and ventilated warehouse, away from moisture and acids.
